Hand-directed tool, &amp;c.



No. 786,390. PATENTBD APR.. 4, 1005. J. K. STEWART.

HAND DIRECTED TOOL, 650. APPL`I0AT10N FILED JUNE 4.1904.

Patented April 4, 1905.

PATENT OFFICE.

JOHN KERVIN STEWART, OF CHICAGO, ILLINOIS.

HAND-DIRECTED TOOL, 800.

SPECIFICATION forming part of Letters Patent No. 786,390, dated April 4, 1905.

Application filed June 4, 1904. Serial No. 211,124.

To all whom, t may concern:

Be it known that I, J oHN KERWIN STEWART, a citizen of the United States, residing at Ohicago, in the county of Oook and State of Illinois, have invented new and useful Improvements in Hand-Directed Tools and Apparatus for Actuating the Same, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

The purpose of this invention is to provide an improved apparatus for driving the operating parts of a hand-directed tool by means of an endless rope, belt, or cord, and a handle for such tool into which the actuating belt or cord extends for actuating the operating parts.

I have shown this invention as applied to an animal shear or clipper; but it is not limited to a tool of this specific class. It consists of the features of construction set out in the claims.

In the drawings, Figure 1 is a side elevation of a hand-power apparatus and shearing-tool connected therewith embodying my invention. Fig.2 is a plan view of ashear or clipper and the endless-cord-guide pulley-block pivoted to it, a portion of the easing of the tool being broken away to show the interior construction in section at the plane of the driving-cord. Fig. 3 is a longitudinal section at the line 3 3 on Fig. Q, Fig. 4 is a detail section at the line 4 t on Fig. l.

In my improved apparatus the standard 1 has swiveled at its upper end a fitting A, from which projects a stud-axle 2 for the drivewheel 3. The fitting A has a spindle 4 for swiveling it, as stated, at the upper end of the standard I, the latter being tubular or socketed for that purpose, and to the same fitting there is connected, preferably by a hinged joint permitting up-and-down movement, an operating or directing handle 5. The drivewheel 3 has a crank-handle 3a for rotating it by hand, or, obviously, it may be driven by power otherwise applied. On the same studaxle 2 upon which the drive-wheel 3 is mounted there are also journaled at the inner side of said wheel 3 guide-pulleys 6 6, and from the fitting A a second stud-axle 7 projects parallel with the stud-axle 2 above the latter, and on this second stud-axle there are mounted guidepulleys 6L 6, cooperating with the pulleys 6 6 for retaining and guiding the driving-cable, as hereinafter explained. Said driving-cable 8 passes about the pulley 6 and thence both plies extend to pulleys l() l0 on the pulleyblock 9, mounted on the side oil a weight 25, which is arranged to slide freely up and down on and turn about the standard 1. The two plies of the cable pass around the pulleys 10 10, respectively, at the same side of the pulleys, but running, of course, in opposite directions, and extend thence up to and about the guide-pulleys 6 6 on the litting A, said plies being securely retained by the coperating pulleys 6 6a, and thence the cable passes to the pulley-block 11, which is pivotally connected at l1n to the handle IQ'of the shears, said pulley-block having two pairs of guidepulleys I3 13 13 I3, arranged similarly to the two pairs of guide-pulleys 6 6rL and 6 6 on the litting A, as above described, so that each ply of the cable is guarded and retained in the grooves of the two mated pulleys of said pairs, respectively, and the cable from said pulleyblock extends about the operating-pulley 14, which is journaled in the handle for actuating the moving cutter.

The construction of the cutter in detail is not a part of the present invention, and it will be described only sufficiently to indicate the relation of the driving means thereto. This construction comprises a vibrating lever 15, suitably fulcrumed in the handle at the forward part and having at the rear end a foreand-aft elongated slot 15a, in which an eccentric or crank-wrist 14; on the pulley 14 engages for oscillating or vibrating' the lever as the pulley rotates. At the forward end the vibrating lever 15 engages by its terminal l5b the reciprocating cutter 16, which is guided in its reciprocation by the engagement of the lip 17 of the housing or forward part of the handle with a suitable groove in the upper surface of the reciprocating cutter, and the fixed or non-reciprocating cutter or comb 18, which is applied to thelower side of the housing at the forward end of the handle, is held in proper working contact with the reciproeating cutter by means of the tension-bolt 19,

which extends through both cutters, being stopped by its head 19, engaging under and let into the under surface of the comb and passing through a slot in the vibrating cutter and through the housing, above which it protrudes. to receive the tension-spring 20 and adjusting thumb nut 21, the operation of which will be understood without further description. The comb is further kept in place by engagement at its rear part with two studs 22 22, which project down from the bottom of the housing, taking into holes provided for that purpose in the comb near the rear edge of the latter, and the two cutters are accommodated to each other so as to be kept at all times in working relation at their shearingteeth by the provision` of a slight upraise or protubcrance at the under side of the housing midway between the two studs 22, so that the comb may rock slightly, if necessary, to keep it seated always at its forward or toothed end against the reciprocating cutter.

It will be understood that the operation of the weight 25, carrying the pulleys 10 10, is to take up the slack of the driving-cable and permit the operator to move the tool to a greater or less distance from the standard, as may be required by the work performed as the tool is moved-as, for example, in the case of the shears or clipper shownuover the body of the animal which is being sheared or clipped and that this provision keeps the cable always operatively snug upon the pulley 14 in the handle with proper tension to drive the latter for actuating' the working parts of the tool. The fitting upon which the main drive-wheel 3 and also the pulleys 6 6 are mounted being swiveled about the standard and the weight-ed pulley-block or pulley-carrying weight which takes up the slack being also free to turn about the same standard, the person who is furnishing the power by rotating the wheel 3 can readily direct the entire apparatus with respect to the position of thev operator who is handling the tool, so that any undue deflection of the cable from the pulley 6 to the tool may be avoided, and all the parts which are sustained on the standard being mounted about the same vertical axis and close thereto there is attained a maximum degree of compactness and stability.

It will be obvious that the character of the tool which is actuated by the endless-cord construction herein shown is of minor consequence. 1 have shown the device applied to a shearing-tool and have described such shearing-tool merely for the purpose of indicating the practicability of the device for a tool requiring manipula-tion in varying directions for the purpose of its work. I do not limit myself in the use of the driving connections described to a shearing or clipping tool,

but intend them to be applicable, broadly, to tools directed by hand for whatever purpose, and any mechanic will readily adapt the connections for taking power from the pulley 14 to the character of the tool in which such pulley is mounted.

It will be obvious that a spring might be substituted for the weight 25 without changing the principle or mode of action, and I use the term weighted in my claims to indicate means for causing downward tendency, whether it be by gravity or such well-known equivalent as that above suggested.

I claim-- 1. 1n an apparatus for the purpose indicated, in combination with the tool-handle, a pulley journaled therein; a driving-cord running about such pulley; a pulley-block connected to such handle at a pivot whose axis is located in the plane of travel of the cord about the pulley in the handle; guide-pulleys for the respective plies of the cord mounted in such pulley-block, and means for actuating the cord and taking up its slack.

2. In an apparatus for the purpose indicated, in combination with the tool-handle` a grooved pulley therein; an endless cord passing about such pulley; a power-communicating wheel for driving the cord; a standard on which the bearing of said wheel is swiveled with capacity for oscillation about a vertical axis; guidepulleys for the cord mounted on such swiveled bearing; a weight vertically guided on the standard, and cord-guide pulleys mounted on such weight, the two plies of the cord extending from the drive-wheel about the last-mentioned guide-pulleys, and thence about the iirst-mentioned guide-pulleys, and thence to the handle.

3. In an apparatus for the purpose indicated, in combination with the tool-handle, a pulley therein; an endless d riving-cord passing about such pulley; a power-communicating wheel for driving such cord; a standard; a bearing for the driving-wheel swiveled about a vertical axis on such standard; guide-pulleys for the cord carried by said swiveled bearing; a weight mounted about the swivel-axis of said swivel-bearing' in the standard free to move vertically and turn about such axis, and cordguide pulleys mounted on such weight, the cord being extended from the drive -wheel around the last-mentioned guide-pulleys, and thence to the first-mentioned guide-pulleys, and thence to the handle.

In testimony whereof I have hereunto set my hand, in the presence of two witnesses, at Chicago, Illinois, this 1st day of June, 1904.

JOHN KERWIN STEIVART.

In presence of- J H. Bini-IN, F. V. KING.

IOC

IIE 

